Arum italicum Mill.
ssp. canariense (Webb & Berthelot) P. C.
Boyce
Familia
ARACEAE
Aro, Oreja de
burro, Cachima, Flor de
primavera, Llave del año, Tragontino
Arum italicum ssp.
canariense is a perennial herbaceous plant belonging to the Araceae
family, native and endemic to the Macaronesia region, and found in the
archipelagos of the Canary Islands, Madeira and the Azores. In the
Canary Islands, it is commonly known by names such as ‘orejaburro’,
‘regaljar’, ‘cachimba’, ‘tragontino’ or ‘llave del año’.
It is a
perennial, rhizomatous plant that grows to between 25 and 40 cm in
height. It develops a rosette of basal leaves with long petioles.
Its
leaves are distinctly sagittate or hastate (shaped like the tip of an
arrow or spear). They are dark green in colour, sometimes with very
pronounced spots or veins, and have divergent, pointed basal lobes.
It flowers in spring (April–May). Its inflorescence is a creamy-yellow
spadix enclosed by a large, modified bract called a spathe, which is
whitish-green on the outside and purplish inside its basal tube.
It
produces a cylindrical infructescence composed of striking, fleshy
berries that turn a bright orange-red as they ripen during the summer.
This subspecies is closely associated with high-humidity, shaded
environments. It grows naturally in the clearings and undergrowth of the
laurel forest and in humid areas of the thermophilic zone. In the Canary
Islands, it is found on the islands of Tenerife, Gran Canaria, La Palma,
La Gomera, Fuerteventura and Lanzarote. It is a taxon with relatively
scarce and localised populations, threatened in some areas by trampling,
construction work and the use of herbicides.
Like other varieties of
arum, the entire plant is highly toxic due to the presence of calcium
oxalate crystals and aroin, particularly its fruits; it must therefore
never be ingested.
La Palma, La Gomera,
Tenerife, Gran Canaria, Fuerteventura